Opening STP Files

The STP file type is primarily associated with CATIA V5.

STP	File extension: STP
	File type:	3D model file

What is an STP file

STP files mostly belong to CATIA V5. STP files are used for exchanging 3D design data between CAD systems. They conform to the STEP standard (Standard for the Exchange of Product model data) which defines a common language for product models.
These files include detailed information about a 3D model and are used to share design work between different software environments.

They allow collaboration among engineering teams.

They support precise modeling details required for manufacturing.

They follow ISO 10303 standards.

FilExt.com tip: Open these files with CAD applications such as CATIA V5, SolidWorks, or a dedicated STEP/STP viewer. For more details, visit CATIA V5.

How can I open an STP file?

You need a suitable software like CATIA V5 to open an STP file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your STP file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a STP file directly in the browser:. Just drag the file onto this browser window and drop it.

Online STP File Viewer

Choose your .stp file to view

or drag and drop it here

Online File Viewer

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How to convert STP files to JPG, PDF, HTML, DOC, ...

You can convert STP files using our online STP file viewer (powered by Convert.Guru):

To do so, click the "Choose your .stp file to view" button above.
After your file is opened in browser,
click "Save as..." in the menu.
Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert STP files:

CATIA V5
See the previous paragraphs to learn more about the main application. STP files are often referred to as CATIA V5 cads because this type of file is primarily created or used by this software.
3D Graphic
CATIA (ISO-10303 STEP Product Data) by Dassault Systèmes
CATIA is an integrated suite of Computer Aided Design (CAD), Computer Aided Engineering (CAE), and Computer Aided Manufacturing (CAM) applications for digital product definition and simulation. CATIA is the product design solution in the PLM offering. It allows manufacturers to simulate all the industrial design processes, from the pre-project phase, through detailed design, analysis, simulation, assembly and maintenance. This software, made by Dassault Systèmes, is distributed by IBM as part of their Product Lifecycle Management system. The Mime types used with this association are: application/step, application/x-step. The identifying characters used for this association are - Hex: 49 53 4F 2D 31 30 33 30 33 2D 32 31 3B, ASCII: ISO-10303-21;. Related links: IBM Product Lifecycle Management
CST CAD Navigator (CAD File) by CADSoftTools
Enables to open and convert different 2D/3D files, get their dimensions and create section views. The software is compatible with Windows, macOS, and Linux. This file format is classified as CAD.
DART Pro 98 System Settings
EC997 Dyno Test (Step Test) by Factory Pro Tuning
FScruiser (Setup File) by USDA Forest Service
FScruiser is the Windows/Windows CE successor to NatCDE, the MS-DOS based cruising data entry system. FScruiser is timber cruising software.
NASCAR Racing 2002 (Track Picture) by Sierra
PageKeeper Packed Storage File
Photoshop (Plug-in) by Adobe Systems Incorporated
One example would be the Sonic Style Creator Plug-in for Photoshop which exports an .STP file that Sonic's MyDVD will recognize. DSS 1.0 DVD Style Sheets specification defines a standard for passing style sheet information between applications, allowing anyone familiar with Photoshop to create styles -- menus, backgrounds, and buttons, and layouts -- that can be used to design custom DVD titles. This file format is classified as Graphic. Related links: Sonic MyDVD Studio Deluxe
SharePoint (Services Template) by Microsoft Corporation
Office SharePoint Designer provides tools to automate business processes, build efficient applications on top of the Microsoft SharePoint platform, and tailor SharePoint sites. The STP file is a binary CAB file containing a MANIFEST.XML file.
SYSTRAN Translation Project Manager (Project File) by SYSTRAN
SYSTRAN is popular translation software used today and is capable of providing high-quality drafts in Arabic, Chinese, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, and Swedish.

STP file format:

A file format defines how the data in the file is structured. The file format can be deduced from the file extension and the signature. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Exact knowledge of the format is therefore important in order to solve problems occurring in files. In the following you will find our evaluation of the STP files:

The STP extension is very commonly found and is mainly used by one program with a specific format. The following file formats are most commonly found in STP files:

95% of all STP files belong to ISO-10303 STEP model data. The content consists of readable text data, which can be read using a text editor. Most of these files are 73 KB to 38 MB in size. The file type was developed only in the last few years. The following keywords are characteristic: HEADER;, ISO-10303-21;, FILE_NAME, /* Generated by software containing ST-Developer, * from STEP Tools, Inc. (www.steptools.com) and FILE_DESCRIPTION(. These files are often associated with step, assembly, model, plate, assy, simplified, bracket and open.

All other STP files (5%) have no consistent format. Files like these are sometimes linked to design, structure, drawing, insert, layout, links, base or work. Drag & drop your file here to see the file format and a preview of your STP file!

Technical Data for STP File Extension

File classification:

CAD

Related files:

step, iges, sldprt, prt, spt, std, stf, 3d, stb, str, igs, stl, catpart, zip, p21, sat, ifc, ctp, dxml, iges, sto, check, sqd, inst, dwg, dxf

Mime type:

model/step, text/plain, application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: CDLS.Document, FileType: CDLS Document, AppName: CDLS
EXEFile: CDLS.exe

ProgramID: stpFile
EXEFile: %ProgramFiles%\Systran\4_0\Standard\SystranTP.exe %1

ProgramID: stpFile
EXEFile: %ProgramFiles%\Systran\4_0\Premium\SystranTP.exe %1

ProgramID: Microsoft.StreetsAndTrips.Pushpin.2000
EXEFile: %ProgramFiles%\Microsoft Expedia Streets & Trips\Streets & Trips 2000.exe /f%1

ProgramID: SysTuner.Plugin
EXEFile: %ProgramFiles%\SysTuner\SysTuner.exe -addplugin %1

ProgramID: Quartus.SignalTap
EXEFile: C:/quartus/bin/quartus.exe %1

ProgramID: SBContainer.ProjectFile
EXEFile: %ProgramFiles%\Accelrys\MSMODE~1.2\Studio\MATSTU~1.EXE %1

ProgramID: CDLS.Document
EXEFile: %ProgramFiles%\CLICK'~1\CDLS.exe %1

ProgramID: igpackedfile
EXEFile: %ProgramFiles%\Caere\PageKeeper30\SYSTEM\PKVIEW.EXE %1

ProgramID: Quartus.SignalTap
EXEFile: %ProgramFiles%/Altera/quartus/bin/quartus.exe

ProgramID: Radan.Setup
EXEFile: %SystemRoot%\Notepad.exe

ProgramID: Systran6.TranslationProject
EXEFile: %ProgramFiles%\systran\6\systrantranslationprojectmanager.exe

Show all 12 listings To Top

an stp 3D model file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with STP files

Associate the STP file extension with the correct application.
Update your software that should actually open 3d model files. Because only the current version supports the latest STP file format. Search, therefore, e.g. on the manufacturer website after an available CATIA V5 update.
To make sure that your STP file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .STP file online - secure, fast, and no downloads needed.